Bug Description

Binary package hint: unity

TEST CASE:
Start a single instance (single window) of any application (e.g. Firefox). Click on it's icon in the unity launcher.
Expected: activation of the scale plugin on the single window.
Actual: Scale plugin is not activated (presumably because only a single window for the application exists).

If an application has two or more windows/instances, the scale does activate when clicking on the application icon in the launcher.

Approximately a week ago this would cause the scale plugin to activate for windows/instances of that one application. This provides a confirmation to the user that 1) scale is working in general 2) there is really just one, e.g. browser, window open and not another window possibly hidden behind it. This makes me believe this may be a regression, rather than an intentional design decision.